摘要
作者用金相方法对高碳钢孪晶马氏体中显微裂纹形态、密度及其主要影响因素进行了研究。结果表明,碳含量、奥氏体化温度对裂纹最敏感,而且碰撞致裂与相变应力致裂的两种观点并非完全排斥。
The morphology, density and factors causing microscopic cracks in high carbon twin crystallite martensite are studied in a metallographic approach. It is found that the C-content and the austenitizing temperature are two of the most active factors responsible for the cracking. It follows that cracking due to mechanical impact and cracking due to transitional stress are not entirely exclusive of each other.
关键词
高碳钢
孪晶马氏体
显微裂纹
High carbon steel
twin crystallite martensite
microscopic cracking density
austenitization
